Double-coronal X-Ray and Microwave Sources Associated with a Magnetic Breakout Solar Eruption

摘要: Double-coronal hard X-ray (HXR) sources are believed to be critical observational evidence of bi-directional energy release through magnetic reconnection in large-scale current sheets solar flares. Here, we present a study on double-coronal observed both HXR and microwave regimes, revealing new characteristics distinct from earlier reports. This event is associated with footpoint-occulted X1.3-class flare (2014 April 25, starting at 00:17 UT) coronal mass ejection that were likely triggered by the breakout process, lower source extending upward top partially occulted loops upper co-incident rapidly squeezing-in side lobes (at speed ~250 km s−1 sides). The can identified energies as high 70–100 keV. characterized flux curves differ those source, weak dependence projected centroid altitude above 20 keV, shorter duration, an photon spectrum slightly harder than source. In addition, emission 34 GHz also exhibits similar double-source structure spectra line gyrosynchrotron given non-thermal energetic electrons. These observations, especially co-incidence very-fast motion indicate (and possibly caused by) this fast arcades. sheds light origin corona HXRs microwaves.